This historic book may have numerous typos and missing text.
Purchasers can usually download a free scanned copy of the original
book (without typos) from the publisher. Not indexed. Not
illustrated. 1877 edition. Excerpt: ...of a fish, named Hybodus. It
is of a light-brown hue, 4 inches long, and the exterior surface
beautifully fluted. Teeth also of Hybodus, Acrodus, &c. occur.
The most frequent fossil, however, is the little crustacean before
named, Estheria minuta; this.str0ngly resemblesa small bivalve
shell, and is covered with delicate markings. Every here and there
calcareous nodules occur in the sandstone, which when broken up
frequently yield this interesting fossil, which is not more than a
quarter of an inch in diameter. In these marly lumps we have
evidence of the little brackish pools along an ancient seashore,
just such a habitat as the living Estheriae rejoice in. Obscure
vegetable remains also occur, probably Echinostacllys oblongus.
Traces of Voltzia are found, and a cast of the spreading leaves of
this shrub impressed on red marl is the only fossil which the
latter rock has yielded to our search in this county. Black
carbonaceous markings darken the surface of the sandstone beds here
and there, probably the result of the decay of seaweeds. Curious
spottings, due to a trace of manganese, also abound. The surface of
many of the marly beds is covered with markings, usually described
as worm-tracks. It''Iany of them are no doubt the galleries of
boring-worms, which have been filled in with sand, ane then a cast
of them taken, as it were, by the bed deposited upon them. The
marks of eddies, ripples, &c., are especially striking, and the
whole deposit was evidently a littoral one. Pseudomorphic casts of
salt crystals also occur, but we have never found them on the
precise horizon of the Estberia. In the extreme west
ofLeiceatershire, at Orton-on-the-Hill, there is a thin bed of
sandstone in the Red Maris, which is probably lower in...
|Country of origin:
William Jerome Harrison
||246 x 189 x 3mm (L x W x T)
||Paperback - Trade
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